St John's Wort Pumpkin

Hypericum calycinum 'Pumpkin'

Growzone: 4-8

As Low As $42.95
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2 Gal $42.95
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Espoma Bio-Tone Plus Starter Plus $14.95
Treegator Jr. Slow Release Watering Bag $25.95
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This Plants Growzone: 4-8
Growing Zone: 4-8
Mature Height: 12 to 18 inches
Mature Width: 12 to 18 inches
Classification: Perennial
Sunlight: Full Sun
Habit: Forms a mound
Flower Color: Yellow
Flowering Season: July to August
Foliage: Green
Soil Condition: Prefers average to sandy soil
Water Requirements: Water well until established
Uses: Does well in cut arrangements, very versatile plant

St John's Wort Pumpkin Plants for Sale Online


St John’s Wort Pumpkin is a yellow flowering perennial that produces bright orange to pink berries in the fall that do well in cut containers.


Full Description

Ornamental St John's Wort Pumpkin Plants

St John’s Wort Pumpkin is the perfect addition to any sunny to shady garden. The flowers are bright yellow and look almost tropical. The hibiscus looking flowers are replaced by bright orange to pink berries in the late summer to fall, which add extra color and texture to cut flower arrangements. Branches hold up extremely well once cut, and berries retain their bright color.


Planting Information

We suggest when planting your newly purchased St John’s Wort Pumpkin plants that you dig a hole twice as wide as the root system but not deeper. Depending on the quality of your existing soil you may need to add a locally sourced compost or topsoil to the back-fill soil. We do not recommend using straight topsoil or compost as a back-fill soil because more times than not these products will retain entirely to much moisture and will cause the root system to rot. Adding compost or topsoil will help the young feeder roots to spread through the loose, nutrient rich soil, much easier than if you used solely the existing soil which more times than not will be hard and compacted. The most common cause of plant death after transplanting is planting the new plant to deep. That is why we do not recommend planting in a hole any deeper than the soil line of the plant in the pot. A good rule is that you should still be able to see the soil the plant was grown in after back-filling the hole. Watering St John’s Wort Pumpkin: After back filling and lightly compacting the 50/50 mix of existing soil and compost give the St John’s Wort Pumpkin a good deep watering. This is not to be rushed. Most of the water you put on the plant at first will run away from the plant until the soil is soaked. A general rule of thumb is to count to 5 for every one gallon of pot size. For example a one gallon pot would be watered until you count to 5 a three gallon pot would be 15 and so on. Check the plant daily for the first week or so and then every other day there after. Water using the counting method for the first few weeks.


Frequently Asked questions

When should I fertilize my St John's Wort Pumpkin?

When is the right time to prune my St John's Wort Pumpkin?

What type of mulch should I use?


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